Lasse Kjærsgaard Bertelsen vs Jonas Harder
2 games played · Lasse Kjærsgaard Bertelsen 2–0 Jonas Harder
Includes every meeting regardless of who each player's partner was at the time.
| Date | Event | Round | Lasse Kjærsgaard Bertelsen's team | Jonas Harder's team | Result | Sets |
|---|---|---|---|---|---|---|
| 9 May 2026 | Kolding Challenger 1 (3. Div herrer) | Kamp 10 | Marius Vestergaard (U15) / Lasse Kjærsgaard Bertelsen (U15) | Jonas Harder (U20) / Mikkel Harder (U20) | 2-1 | 8-15, 16-14, 15-10 |
| 25 Jul 2026 | Kerteminde Grand Slam (3. Div herrer) | B-Semifinale 1 | Patrick H. Jørgensen / Lasse Kjærsgaard Bertelsen (U15) | Jonas Harder (U20) / Mikkel Harder (U20) | 2-0 | 21-17, 23-21 |